Dahlia plant named ‘BKDAMYL’

ABSTRACT

A new and distinct cultivar of  Dahlia  plant named ‘BKDAMYL’, characterized by its broadly upright plant habit; freely basal branching habit; dense and bushy growth habit; medium-sized dark green-colored leaves; and large semi-double inflorescences with bright yellow-colored ray florets.

Botanical designation: Dahlia hybrida.

Cultivar denomination: ‘BKDAMYL’.

CROSS-REFERENCED TO CLOSELY-RELATED APPLICATIONS

Title: Dahlia Plant Named ‘BKDAMGE’

Applicant: Annie Cornelia Beekenkamp

Filed: Concurrently with the instant application

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Dahlia plant, botanically known as Dahlia hybrida and hereinafter referred to by the name ‘BKDAMYL’.

The new Dahlia plant is a product of a planned breeding program conducted by the Inventor in Maasdijk, The Netherlands. The objective of the breeding program is to create new sturdy container Dahlia plants that have a freely basal branching habit, and large inflorescences with attractive ray floret coloration.

The new Dahlia plant originated from an open-pollination in September, 2011 in Maasdijk, The Netherlands of a proprietary selection of Dahlia hybrida identified as code number 4002035, not patented, as the female, or seed, parent with an unknown selection of Dahlia hybrida as the male, or pollen, parent. The new Dahlia plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination in a controlled greenhouse environment in Maasdijk, The Netherlands in May, 2012.

Asexual reproduction of the new Dahlia plant by terminal cuttings in a controlled greenhouse environment in Maasdijk, The Netherlands since October, 2012 has shown that the unique features of this new Dahlia plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Dahlia have not been observed under all possible combinations of environmental conditions and cultural conditions. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘BKDAMYL’. These characteristics in combination distinguish ‘BKDAMYL’ as a new and distinct Dahlia plant:

-   -   1. Broadly upright plant habit.     -   2. Freely basal branching habit; dense and bushy growth habit.     -   3. Medium-sized dark green-colored leaves.     -   4. Large semi-double inflorescences with bright yellow-colored         ray florets.

Plants of the new Dahlia differ primarily from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Dahlia are more freely branching than         plants of the female parent selection.     -   2. Plants of the new Dahlia have larger inflorescences than         plants of the female parent selection.

Plants of the new Dahlia can be compared to plants of Dahlia hybrida ‘BKDAMGE’, disclosed in U.S. Plant patent application Ser. No. 14/999,407. Plants of the new Dahlia differ primarily from plants of ‘BKDAMGE’ in ray floret color as plants of ‘BKDAMGE’ have bright yellow and red bi-colored ray florets.

Plants of the new Dahlia can be compared to plants of Dahlia variabilis ‘Montana’, disclosed in U.S. Plant Pat. No. 15,186. In side-by-side comparisons, plants of the new Dahlia differ from plants of ‘Montana’ in the following characteristics:

-   -   1. Plants of the new Dahlia have smaller inflorescences than         plants of ‘Montana’.     -   2. Plants of the new Dahlia and ‘Montana’ differ in ray floret         color as plants of ‘Montana’ have pale yellow-colored ray         florets.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Dahlia plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Dahlia plant.

The photograph on the first sheet comprises a side perspective view of a typical flowering plant of ‘BKDAMYL’ grown in a container.

The photograph on the second sheet is a close-up view of a typical inflorescence of ‘BKDAMYL’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and the following observations and measurements describe plants grown during the winter in 12-cm containers in a glass-covered greenhouse in Maasdijk, The Netherlands and under cultural practices typical of commercial Dahlia production. During the production of the plants, day and night temperatures ranged from 17° C. to 19° C. Plants were pinched one time and were nine weeks old when the photographs and description were taken. To induce inflorescence initiation and development, plants were grown under short nyctoperiod (long day) conditions. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2015 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Dahlia hybrida ‘BKDAMYL’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of Dahlia             hybrida identified as code number 4002035, not patented.         -   Male, or pollen, parent.—Unknown selection of Dahlia             hybrida, not patented. -   Propagation:     -   -   Type.—By terminal cuttings.         -   Time to initiate roots, summer.—About 16 days at             temperatures ranging from 18° C. to 21° C.         -   Time to initiate roots, winter.—About 19 days at             temperatures ranging from 19° C. to 21° C.         -   Time to produce a rooted young plant, summer.—About 21 days             at temperatures ranging from 18° C. to 21° C.         -   Time to produce a rooted young plant, winter.—About 23 days             at temperatures ranging from 19° C. to 21° C.         -   Root description.—Medium in thickness, fibrous; typically             creamy white to light brown in color, actual color of the             roots is dependent on substrate composition, water quality,             fertilizers, substrate temperature and physiological age of             roots; tuber development has not been observed on plants of             the new Dahlia.         -   Rooting habit.—Moderately freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Broadly upright and mounding plant             form; overall plant shape, flattened globular; freely basal             branching habit with about six primary branches developing             per plant; inflorescences held above the foliar plane on             strong peduncles; bushy and dense growth habit; pinching is             not required but will improve branching habit; moderately             vigorous growth habit.         -   Plant height, soil level to top of foliar plane.—About 17.6             cm.         -   Plant height, soil level to top of floral plane.—About 20.5             cm.         -   Plant diameter or spread.—About 29.4 cm.         -   Lateral branches.—Length: About 9.4 cm. Diameter: About             6 mm. Internode length: About 1.3 cm. Aspect: Primary             branches are mostly erect; secondary branches, about 30°             from primary branch axis. Strength: Moderately strong.             Texture and luster: Smooth, glabrous; glossy. Color,             developing: Close to 143A to 143B; at the internodes, close             to 144A. Color, developed: Close to 144A. -   Leaf & leaflet description:     -   -   Arrangement.—Leaves opposite and simple.         -   Length.—About 8.5 cm.         -   Width.—About 6.9 cm.         -   Shape.—Ovate to broadly ovate.         -   Apex.—Short apiculate.         -   Base.—Broadly attenuate.         -   Margin.—Coarsely dentate.         -   Venation pattern.—Pinnate.         -   Texture and luster, upper surface.—Slightly rugose; sparsely             pubescent; slightly velvety; slightly glossy.         -   Texture and luster, lower surface.—Sparsely pubescent;             slightly matte.         -   Color.—Developing leaves, upper surface: Close to 137A.             Developing leaves, lower surface: Close to 137B. Fully             expanded leaves, upper surface: Close to NN137A; venation,             close to 191B. Fully expanded leaves, lower surface: Close             to 143A to 143B; venation, close to 146A to 146B.         -   Petioles.—Length: About 6 cm. Width: About 3.5 mm. Height:             About 3.5 mm. Strength: Moderately strong to strong. Texture             and luster, upper and lower surfaces: Smooth, glabrous;             glossy, Color, upper surface: Close to 144A to 144B. Color,             lower surface: Close to 144A. -   Inflorescence description:     -   -   Appearance and arrangement.—Semi-double inflorescence form             with ray and disc florets forming acropetally on a             receptacle; inflorescences positioned above and beyond the             foliar plane on strong peduncles; inflorescences face mostly             upright to slightly outwardly; freely flowering habit with             about 24 inflorescences developing per plant.         -   Fragrance.—None detected.         -   Flowering response and flowering period.—Early flowering             habit, plants begin flowering about 61 days after planting;             plants flower continuously during the autumn into the winter             in The Netherlands.         -   Post-production longevity.—Inflorescences maintain good             substance for about ten days on the plant; inflorescences             persistent.         -   Inflorescence buds.—Height: About 9 mm. Diameter: About             1.2 cm. Shape: Flattened globular. Texture and luster:             Smooth, glabrous; glossy. Color: Close to 154A; towards the             apex, close to 154B.         -   Inflorescence size.—Diameter: About 7.9 cm. Depth (height):             About 5.6 cm. Disc diameter: About 1.2 cm.         -   Receptacles.—Height: About 4 mm. Diameter: About 7 mm.             Shape: Flattened globular. Color: Close to 145C.         -   Ray florets.—Quantity per inflorescence and arrangement:             About 90 arranged in about five whorls. Length: About             3.7 cm. Width: About 2.4 cm. Shape: Broadly obovate. Apex:             Shallowly praemorse to shallowly retuse. Base: Attenuate.             Margin: Entire. Aspect: Upright to roughly horizontal and             eventually downward; moderately to strongly concave. Texture             and luster, upper surface: Smooth, glabrous; velvety;             slightly glossy. Texture and luster, lower surface: Smooth,             glabrous; velvety; matte. Color: When opening, upper             surface: Close to 2A and towards the base, close to 6A. When             opening, lower surface: Close to 2A. Fully opened, upper             surface: Close to between 1A and 2B; venation, same as             lamina, close to between 1A and 2B; color becoming closer to             1B with development. Fully opened, lower surface: Close to             1A; venation, same as lamina, close to 1A; color becoming             closer to 1B with development.         -   Disc florets.—Quantity per inflorescence and arrangement:             About 35 massed at the center of the inflorescence in about             three spiral whorls. Length: About 1 cm. Diameter: About             2 mm. Shape: Tubular, elongated; apices, acute. Texture and             luster, inner and outer surfaces: Smooth, glabrous; glossy.             Color, when opening, inner and outer surfaces: Apex and             mid-section: Close to 12A. Base: Close to 150C. Color, fully             opened, inner and outer surfaces: Apex and mid-section:             Close to 12A. Base: Close to 150C.         -   Phyllaries.—Quantity per inflorescence and arrangement:             About eight arranged in about two whorls. Length: About             1.6 cm. Width: About 7 mm. Shape: Ovate. Apex: Acute. Base:             Cuneate. Margin: Entire. Texture and luster, upper and lower             surfaces: Smooth, glabrous; moderately glossy. Color, upper             surface: Close to NN137B. Color, lower surface: Close to             137C.         -   Peduncles.—Length, terminal peduncle: About 8 cm. Diameter,             terminal peduncle: About 4 mm. Strength: Strong. Texture and             luster: Smooth, glabrous; moderately glossy. Color: Close to             144A.         -   Reproductive organs.—Androecium, present on disc florets             only: Quantity per floret: About five. Filament length:             About 1 mm. Filament color: Close to 150D. Anther shape:             Narrowly oblong. Anther length: About 3.5 mm. Anther color:             Close to 17B. Pollen amount: Abundant. Pollen color: Close             to 17B. Gynoecium, present on disc florets only: Quantity             per floret: One. Pistil length: About 9 mm. Style length:             About 6 mm. Style color: Close to 150C. Stigma diameter:             About 2 mm. Stigma shape: Cleft, decurrent. Stigma color:             Close to 12A. Ovary color: Close to 145D. Seeds and fruits:             Seed and fruit development have not been observed on plants             of the new Dahlia. -   Disease & pest resistance: Plants of the new Dahlia have not been     observed to be resistant to pathogens and pests common to Dahlia     plants. -   Temperature tolerance: Plants of the new Dahlia have been observed     to tolerate high temperatures of about 35° C. and to be suitable for     USDA Hardiness Zones 9 to 11. 

It is claimed:
 1. A new and distinct Dahlia plant named ‘BKDAMYL’ as illustrated and described. 